Vitamin A Equivalence of Carotenoids From Cassava in Women
试验速览
- 阶段
- 2 期
- 状态
- 已完成
- 发起方
- 入组人数
- 10
- 试验地点
- 2
- 主要终点
- Vitamin A equivalency from varieties of cassava with and without oil
研究概览
简要总结
The purpose of this study is to determine the vitamin A equivalents in high-carotenoid varieties of cassava.
详细描述
We plan to conduct a single site intervention phase II intervention study in healthy adult women. Women will serve as their own controls, and will be fed three treatments in random order: a single meal of low-carotenoid cassava porridge with fat, a similar meal of bio-fortified cassava (that is high in vitamin A-forming carotenoids) with fat, and a similar meal of bio-fortified cassava without fat. Carotenoids and vitamin A will be measured in the triacylglycerol-rich lipoprotein (TRL) fraction of plasma by standard methods involving ultracentrifugation (to concentrate the TRL fraction) followed by reversed-phase HPLC using electrochemical detection. We plan to collect sufficient data to identify the times of the first appearance and peak concentrations in retinol, retinyl esters, alpha-carotene (AC), beta-carotene (BC), beta-carotene isomers (BCI), and cryptoxanthin (CX) in TRL: when a single meal containing moderately high amounts of carotenoids from bio-fortified cassava is fed to healthy adult women. We will use this data to determine the vitamin A equivalency of bio-fortified cassava in adult women, and the effect of fat on vitamin A equivalency of bio-fortified cassava.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Basic Science
- 盲法
- Double (Participant, Investigator)
入排标准
- 年龄范围
- 18 Years 至 45 Years（Adult）
- 性别
- Female
- 接受健康志愿者
- 是
入选标准
- •non-smoking
- •BMI between 18-30
- •total cholesterol concentrations between 90 and 225 mg/dL
- •blood pressure under 140/90 mm Hg
- •hemoglobin above 11.5 g/dL
- •blood chemistries within the normal range
排除标准
- •must not be pregnant or trying to get pregnant
- •must not be taking fat, triacylglycerol, or cholesterol lowering medications) such as orlistat, gemfibrozil, niacin, lovastatin, simvastatin, colestipol, and ezetimibe)
- •must not taking medicines containing high doses of retinoids such as Accutane or high vitamin A or carotenoid supplements
- •must not have blood chemistry or health history results consistent with acute cancer or heart disease
- •no obvious psychological or sociological problems such as alcoholism, drug abuse, or severe and acute mental illness that would influence their ability to sign an informed consent agreement or to participate in study duties and activities
- •must not be allergic to cassava, peanuts, or peanut oil
结局指标
主要结局
Vitamin A equivalency from varieties of cassava with and without oil
时间窗: 0, 60, 150, 240, 330, 420, 510, 600, 1440 min
Vitamin A and other carotenoids will be measured in triacylglycerol rich lipoprotein fractions at 0, 60, 150, 240, 330, 420, 510, 600, and 1440 minutes after consumption of cassava containing meal.
次要结局
未报告次要终点